Automatic valve-closing device for gas pipes



Nav. 24,1925. f 1 1,563,133

v f T. ZLYpAszYK AUTOMATIC VALVE CLOSING DEVICE FOR GAS PIPES Filed nec.s. 1924 s sheets-shet 1 Nov. 24, 1925- 1,563,133 T. ZLYDASZYK AUTOMATICVALVE CLOSING DEVICE FOR GAS PIPES Flgiggg. 1924 3 Sheetse i 2 *d f if@s m e Nav. 24,1925. 1,563,133

' T. ZLYDASZYK AUTOMATIC VALVE CLOSING DEVIC FOR'GAS PIPES Filed Dec. 3.1924 3 Sheets-Sheet 3 /L-I' y if Patented Nov. 24, 1925.

'merit ziivnaszii, or CHICAGO, ILIirNos.

AUTOMATIC VALVE-CLOSING DEVICE FOR GAS PPES.

Application filed December 3, 1924.-; `Serial No. 753,654.

To all whom it may concern.:

Be it known that l, Teorie Zinfniszri, a citizen of Poland, residing atChicago, in the county of Cook and State ot Illinois,

[` have invented certain new and usetul'lmprovei'ne'nts in AutomaticValveeClosing Dee vices for Gas Fipes, oi which the following is aspecification.

My invention relates to automatic valve 1! closing devices for gas pipesand its principal object is theprovision ci' thcrmostatic means foractuating the mechanism tor closing the auxiliary valve.

Another object of the invention is to adapt the known property ofmetals, viz. expansion and contraction under varying temperatures foroperating suitablemechanism 'for closingthe valve in gas pipe when thesupply ot gas is discontinued dueto any` cause.

Should the iiamebe extinguished the gas would-escape with the danger oiasphyXiating the occupants ot' a room or( dwelling, there being no satemeans for automatically' closing the valvetherefore,` a further objectoi the invention is the provision of an auX- iliary valve and meansconnected thereto iter closing the same when the vllame 'becomes eX-tinguish'ed due to any cause with the regular valve remaining open.

A still further object et the present invention is to provide meanstheremo'statically7 operated for -`the purpose mentioned particularly'adapted for use in kitchen gas stoves.

Another object ci the invention is to proifid'e signalling meansconnected with and actuated by the valve operating means 'for thepurpose of' `assuring the occupants that thedevice is in an operativecondition.

A still further object of the-invention is the provision et meanstransmittingimediately the' action otthe thermostat to the respectivedevice from the burner farther removed from its cooperating device as ina kitchen stove where one auxiliary valve closing device is providedrfor eachluirner'and where the relative positionoi the vdew-ieee inrespect to their burners is not uniform.

W ith these general objects `in view and othersltliat will appear as thenature of the `irlvention isbetter uncle 1steed, the sainecen sistein'thejnovel construction, combination and `arrangement of partshereinafter more fully described, illustrated in the accompanying'drawings and pointed out in the appended claims.

In the drawings forming apart 01"" this application, andin which likedesignating characters refer to corresponding parts throughout theseveral views.

Figure 1 is a top plan View ofthe device with'cover removed, alsoshowing top plan view of a. burner withthe grating removed;

Figure 2 is a cross-sectional view 'of a den tail partof the inventiontaken' on line Qf-Z of Figure 1;

Figure 3 isa cross-sectional View on line 23e-3 of Figure 1 with thecover and grating added;

Figure i is a longitudinal view through the plattform and the cover`showing part of the mechanism in elevation and part in section, theviewbeing taken on line 4-4 of Figure l; y

Figuer 5'` is a top` plan view ci the stove with a number of burners anda like number of the present devices ycooperating with the respectiveburners Figure 6 is al cross sectional view of a modified forni o'ftheinvention which in its principal features resembles the termillustratedin Figure 3;

Figure 7 is a longitudinal sectionalview of a p'a-lrtv of the inventiontaken online7-7 et Figure 5; 'y

Figure Sis a crosssectional view through the auxiliary valve taken online 8;-8 ot' Figure 1; and Y Figure 9' is a top; plan 'fractional viewshowing a` detail of the iiivention in its modified form taken ofline'9ei9 of Figure 6.

Coming to a1 more detailed description the invention 'is associated witha? kitchen stove 10'having common' type burner 11 towliich gas issupp.lied"bypipe 12 and main pipe 13. Said pipe 12 is provided with` avalve casing 13 Within which are positioned two valves, viz. a regularvalvole and" an aiixiliary valve 13'5, Ythis latter' valve beingVintended to be operated by the mechanismconstituting the presentinventionf Said mechanism, pcsitioned 1 upon plattci'm '16 ,HVembodiesan 'up per lever 1'? and a lower lever 1S. Vvlisa-r its adjacentpipe 1,2 thesaidupperlever is pivoted to the platform as at 19 (Fig. 1),while the lower lever is pivoted near its outer end to said platform asat 20.

Each of said pivot points embodies a screw head 21 (see Fig. 2), arelatively thick shank 22 passing through an aperture made in eachlever, and screw point 23 which passes through said platform 16 and isadapted to receive nut 24 therebelow. Head 21 being wider than the`shank prevents any upward creeping movement of the levers.

At their outer' ends the levers are joined by means ot' pivotalconnecting link 25. The lower lever 18 is longer than the upper leverand at its inner end carries a` rack bar 26 which is pivotally imbeddedwithin the lever by its enlarged head 27. Leaf spring 28 is atliXed byits upper end to the end of the lever 18 and presses upon the back ofsaid rack bar. The opposite edge ot the rack bar is provided with teeth29 and has cam portion 30 which cooperates with pin 31 projecting fromthe platform,

Coil spring 31 presses at all times against the side of lever 18 and lug32 projecting from said side prevents the displacement ot' said spring.

The auxiliary valve 15, best illustrated on Figure 8, comprises adownwardly tapering valve stem 32. For opening` the Yalve a handle 33 isprovided upon said stem. The lower reduced end of the stein is oiE asquare formation in cross section tor rigidly securing thereon disk 34.Said lower end ot the stem is provided with a threaded bore tor atHXingsaid disk upon said end by means oit' screw 35, the screw head beingentirely enclosed within socket 36 made in said disk. Washer 37 fittedupon said square end oi the stem remains interposed between said disk 34and the valve casing 13. It will be seen that by turning the handle 33to operate the valve, disk 34 will be revolved with the stem. A. portionof the periphery7 ot said stem adjacent its upper end is threaded as at38 for receiving ring 39 which is positioned in a circular groove madein the casing. F or the purpose ot removing or adjusting said ring by aface spanner a pair of holes 40 is made therein. The purpose ot saidring is to prevent biting ot said tapered valve stein into the valvecasing.

Said disk 34 has a reduced portion 41 and a resulting od-set portion 42.Pin 43 is projecting vertically from said off-set portion and on a linesubstantially diametrically opposite from said pin the periphery of thedisk is provided with teeth 44, and more or less atan intermediate pointon the periphery a horizontal pin 45 projects therefrom. Coil spring 46is secured by its one end to said pin and the other end thereof isanchored to the platform 16 by means oi screw 47.

Lever 48 is pivoted at its central portion devices to the support 49projecting `from thc platform. The rear end of said lever is underupward tension by spring 50. Operating rod or button 51 is pivotallysecured to the rear end of said lever. Tongue 52 extends rearwardly:trom the rear end ot said lever and cooperates with bell 53 for thepurpose hereinafter described.

A thermostatic rod 54 is imbedded in stove wall 55 and by the otherreduced end is loosely position in socket 56 made in the adjacent sideof lever 17 at the inner cud thercot'. Grating 56 remains above saidrod.

Figure 1 illustrates the position of the device above the plane of theburner, while the modified form ot the invention, illustrated on Figure6, assumes the device to be bclow they plane of the burner. In thatlatter instance an upright standard 57 integrally formed with lever 17is provided, and a series of sockets 58 are formed therein. A pluralityof said sockets is for convenience merely as the rod may be positionedin any one of said sockets depending upon the relative position of theburner and of the rod in respect to the device.

A cover 59 is provided for enclosing the device with the exception othandles ot valves 14 and 15 and button 512 all ot which project throughsaid cover, the cover being secured to the platform 16 and to the stoveby any suitable means. The modied form of the invention illustrated onFigure 6, has cover 60 which is likewise secured to the platform 16 andby means ot brace 61 is attached to the stove. By bracket 62 which isaliiized to the wall ot the stove the platform is supported.

Figure 5 illustrates four of the present devices with the cover removedand four burners disposed on top of the stove. with the grating removed7the devices being indicated generally by letters A. B, C and D, and theburners with which said devices cooperate are marked by A', B, C and D,respectively. Bar 63 is longitudinally positioned over the top of thestove and al'- lixed thereto by screws 64. Rods 54 and 54d cooperatingwith burners A. and D are positioned by their rear ends in the aperturesmade in said bar, said apertures being threaded for receiving screws 65by means of which said rods are properly adjusted in respect to thelevers 17 in the devices A. and D. Nuts 66 upon said screws 65 preventany creeping moven'ient thereof under the expanding or contractingaction of said rods under varying temperatures,

Since burners B and C are farther removed from their respective devicesB and C and are not in alinement therewith the thermostatic act-ion ofrods 54b and 54c is transmitted to rods 67 and 68, respectively, whichrods cooperate with levers 17 in the B and C, The expanding or con- "vionasales `f?,

tractn"-`actlonof red 54 isftrairsintted to the 1"ocf67* through`themedium of plates 69 and 70 which are positioned inthe cutaway7portion in thebar 63 as illustrated on Figure 7. plates 'arerounded anddo not abut the adtion `in said bar 63. This arrangement 1s .necessaryin order that said plates may freely' move within said cut-away portionand clear by said adjacent faces when actuatedby r'o'del". Each of saidplates is on pins 71 and 72 'which project from the bar G3. The innerend of plate 69 is reduced in thicknessand has a projectlikewise reducedin thickness and forms a shackle 7st which over-lies the reduced rend ofvsaid plate 70. Said pin 73 and shackle 74 form 'interlocking meansbetween the two plates, yet'permitti'ng the horizont-al sliiftin'gnioveinent otj the plates on their pivotsfl and 72. The reduced end ofrod 54" is loosely positioned in socket 75 made in the adjacentedge ofplate 69 at the outerY 'end thereof; The reduced upper end of rod 67 isloosely positioned in socket 76 madey in' the Opposite edge of plate".70 at its `outer end;*while*v theother end of said rod cooperates'with lever 17 of the device B.

Similar means astliat described above is provided for therods 54 and 68,wherein plate 70" is associate-d with redes and plate 69 cooperateswithrod 68,'tlie plates being pivot'ed onpins 712 and 71', respectively,and-haveinterloeking means at their inner ends 'con'sistiiig'of pin 73`and shackle 774/.` lnthisinstancethe rod 5d" isfassumed as' beingexpanded and "pressingupon the outer end of plat-e170 forcingtheinnerend thereof to move in the" opposite diife'ction and toassunie anoblique positionon pivot pointin respect to the bar 63. This shiftingmovement of the innler end of' plate 70 causes the' inner end of: plate71 to move in" the same direction forcing-the' outer ond of the lastmentioned plate toinove in `the opposite directronwhich1n turn exertspressure 'on rod 68.

Both rods 541" and out have lthe rear ends threaded and positioned inbores provided in the rear wall 7T' of the stove. Nuts T8 prevent. thedisplace-ment of said rods'from their adjusted positions. For furtherzguarding` against the displacementI of said rods screws 79 bear againstthe adjacent ends thereofI and nuts 80 hold saidscrews in properposition.

Having? described the construction of the invention ll comenow to lthe`description of the ope-ration thereof with the understanding `that 'thedesignating `char'actors on Fig- "ure Tdenote the correspondingpartsonall of the devicesindficate'd by' A313, C, and D The outer end of eachof said Jacent faces resulting in said cut-away por-l Vseveral partsillustrated on Figure l is identical with that in thedevice B of Fig-"ure the description ofthe operationof `said last mentioned devicewille-lso cover the device illustrated in Figure l.

Device A illustrates the invention in its inoperative positiony with theregular valve li' and the auxiliary" valve 15 closed and no 'gas burningin burner A, and therefore with rod 54a cool and contracted.

To bring the device into an operative position the auxiliary valve l5 isopened by turning` handle 33 in the direction of an arrow shown onFigure l. lVhiile turni ng said handle the stein 32 and the disk 3d arerotated therewith in the saine direction. Said hand-le should beturn'edsuiiiciently far until the off-*set portion 42 of the disk iscleared away from the vertical'path oi" movement of the 'forward end'ofV lever 48, the reduced portion 4l. of said disk permitting' elevationof the forward end of said lever'a'bove said disk. lVhenv this is donethe handle is held manually against the tension of spring 46 andby theother handipressure is applied upon button 51 causing theelevation'ofthe forward end of lever 48. TWhen the manual hold on handle33 is released the spring); 46 causes a slight backward rotarynioveinent of the disk until pin 2lf3 comes in lateral engagement withthe 'lever fi-.8 which limits the-further backward movement of the diskand consequently ofthe stem,A and in such a manner the auniliary valveis held open. Qifhen in that position lever 4S by its forward `end restsupon the otf-setvlrjortion t2 iiitern'iediately` of saidY pin 4:3 `andthe edge of the saidoif-sot portion as plainlyshown on Figures 1 and 8.l/Vhen the above operation is `completed and thel regular valve l-jl-`is opened permitting the suppl-y of the gras through' pipe lf2 to theburner l3,'tli`c gras is thenllig'lrted in saidburnci' heating' rod5de-inf Figure lor rod 5ft in Figure 5; lt isl observed that before rodifi of Figure l is sufficiently expanded to exert'any pressure uponlever 17. therack bar 2Q remaining in' contact withpi'n 31 by `its Cainportion 30, is held away from the'disk B-l and the teeth' Lll.

Device C of Figure 5 illustrates-the position of the `niechanisin when`the in burner C is lighted. There rod 54' is assuinedto' be expandedand owing` to its expansion under the influence of high temperatureexerts pressure upon rod 68 through plates 70 and 69` as alreadyexplained. This causes'the shifting movement of the inner end `of leverl8- and of the rack bar 26. `Even a slightniovement of said rack barwill cause the disengagement of the cam portion 30 from pin BL and whensaid pin abuts the reduced portion of said rack bar, spring Z8 pressingagainst the rack barn/'ill cause teeth `29 fte come int/0 engagementwith teeth le on disk 34.` vA further expansion of the rod and aconsequent further pressure on rod 68 will cause a further slidingmovement ot said rack'bar and a consequent turning of the disk Sil willbe eii'ected. This will cause the disengagement of the forward end oflever t8 from the ott-set portion 42 ot the disk v34 permitting said endto drop to the platform owing to the pressure of spring at the rear endof the lever. The rear end ot the lever will become elevated causingtongue 52 to strike bell 53 and thus a signal will be given to theoccupants of the room that the device is in a working condition. DeviceC on Figure 5 illustrates the forvv'ard end of lever t8 as beingdisengaged 'from the ott-set portion 4t2 ot the disk 34- and restingupon platform 16. Rack bar 26 is in engagement with the teeth upon saiddisk. As long as the gas burns and rod Sete is expanded rack bar 26 willhold the auxiliary valve 15 open against the tension oit the spring 4Gpermitting Athe continued tlow of gas, said rack bar being in engagementwith yLhe disk 34.

Should a further supply of the gas be shut otl at the gas factory orinterrupted owing to the low pressure or the Haine become extinguishedrod 54C will gradually cool oft and contract.

Device D on Figure 5 illustrates the position of the mechanism when rod54d has cooled olf owing to the extinguishment of the llame in burner Ddue to any cause. When the rod cools ott the pressure on lever .17 isdiminished and spring 31 pressing against lever 18 causes the inner endot lever 18 to shift toward the lever 17 and while so shitting itretracts rack bar 26 and as soon as the pin 31 hits the cam portion 30the teeth on the rack bar will instantly disengage from the teeth ondisk 34. Under the tension ot spring 46 the disk will turn in thereverse direction from that indicated by the arrow on Figure 1 and thusthe auxiliary valve 15 will be automatically closed preventing theescape of the gas through the burner upon resumption oit the flow of thegas notwithstanding the tact that the regular valve 14e remains open.

IVhile there is described herein a preferred embodiment orn the presentinvention` it is nevertheless to be understood that minor changes may bemade therein without departing from the spirit and scope ot theinvention as claimed.

That I claim as new is:

l. In combination with a burner and a valve cooperating therewith, athermostat associated with said burner, means fortemporarily holdingsaid valve open. means actuated by said thermostat` tor releasing thehold of said irst mentioned means upon Said valve, and a signallingmechanism colevers, said rack operating'with said first mentioned meansand operating instantly upon operation ot said second mentioned means.

2. In combination with a burner and a valve cooperating therewith, athermostat associated with said burner, a disk carried by said valve, apair of levers, said thermostat being in operative engagement with oneot said levers, means adapted to engage said disk preparatory to theexpanding action ot said thermostat. means associated with the secondlever and cooperating with said disk for releasing the engagement ofsaid lirst mentioned means on expanding oi said thermostat, and asignalling device adapted to operate upon disengagement oit said lirstmentioned means from said disk.

3. In combination with a burner and a valve cooperating therewith, athermostat associated with said burner, a disk carried by said valve, apair of levers, said thermostat being in operative engagement with oneof saidA levers, means adapted to engage said disk for holding` saidvalve open preparatory to the action of said thermostat, a springassociated with said disk, a rack bar actuated by the second lever uponoperation ot the theri'nostat, teeth upon said disk adapted to beengaged by said rack bar, said means being capable of disengagement'from said disk when the teeth on said disk come into engagement withsaid rack bar on expansion ot said thermostat, and a signalling devicecooperating with said means for living a signal when said means becomedisengaged from said disk, said spring being adapted to actuate saiddisk for closing the valve on contraction ot said thermostat.

In combination with a burner anda valve cool'ierating therewith, athermostat, a disk associated with said valve, a pair ot levers, a rackbar carried by one ot said bar being adapted to engage said disk forholding the valve open, a rod in operative engagement with the otherlever, and means cooperating between said thermostat and said rodtransmitting the action of said thermostat upon said rod.

In combination with a burner and a valve cooperating therewith, atheruiostat, a disk associated with said valve, a pair ot levers, a rackbar carried by one o'l" said levers, said rack bar being adapted tocngage said disk for holding the valve open on expansion ot saidthermostat, and means associated with said disk for temporarily holdingthe valve open preparatory to the action of said thermostat and saidrack bar` said means being adapted to be released from said disk onoperation ot said rack bar.

6, In combination with a burner and a valve cooperating therewith, athermostat, means cooperating with said thermostat and said valve fortransmitting the expanding or contracting action of the thermostat tothe Valve, disk associated with said valve, said disk having offset andreduced por* tions, means for engaging said disk for temporarily holdingthe Valve open preparatory to the expansion of said thermostat, -saidreduced port-ion 'facilitating the engagement of said last named meanswith said disk, teeth upon the ofi-set portion of 1U said disk, and arack bar associated With said iirst named means, said rack bar beingadapted to engage said teeth on expansion oi' said thermostat foractuating said disk for the purpose of releasing therefrom theengagement of the second named means and for holding the valve openduring the exn panded state of the thermostat.

In testimony whereof I afn my signature.

TEOFXL ZLYDASZYK.

